Improvement in forcing liquids



J. VAN NORMAN. Forcing Liquids.

No. 113,115. Patented March 28, 1871;

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Letters Patent No. 113,115, dated March 28. 1871.

DIMPROVEMENT lN FORCING LIQUIDS.

The Schedule referred to in these Letters Patent part of the same.

same, reference being bad to the accompanying draw-1 ing forming part of this specification, in which.

The figure is a side view of my improved apparatus,

part being broken away to show the construction.

' My invention has for its object tofurnish an improved apparatus, simple in construction, convenient in use, and efi"ective in operation, by means of which hydraulic pressure may be employed to force air automatically into the cask to take the place of the beer as it is withdrawn from said cask, so that the last beer drawn from the cask may be as good as the first, and which may be applied to other uses; and

It consists in the construction and combination of the various parts of the apparatus,-as hereinafter more fully described. 1

A represents a cask containing beer.

B is a tank or vessel containing air, placed in some convenient position. near the cask A, and either above, below, or upon a level with the said cask, as may be desired.

O is a tube, one end of which is. connected with the bung-hole of the cask A by a stop-cock or other suitable connection.

The other end of the tube 0 is connected with the upper part of the air-tank B. 1

In the top of the air-tank B is formed a hole or holes, closed with a valve, 1), opening inward, so that, when the air within said tank is under pressure, the valve 12' may remain tightly closed; but when the pressure is removed the said valve may open and allowthe air to pass into the tank freely.

D is a tube, one end'of which is connected with the lower part of the air-tank B, and the other end of which is connected with the lower part of the tank E.

The tank E is designed to contain water or other suitable liquid, and has-a small hole or opening in its top, through which the liquid may be introduced, and which will allow the air to pass in and out freely.

To the top of the tank-E is attached a bail, loop, or eye, 0, to receive the end of a rope or chain, by which the said tank E is suspended, and by which the said tank may be raised and lowered, the tank being soarranged' that it maybe raised above and lowered below the air-tank B.

In using the apparatus the tube 0 is connected with the cask A, from which the beer is to be drawn, the tank B- being filled with air and the tank E with water or other suitable liquid. The tank E is then raised above the air-tank B, so that, as the beer is drawn from the cask A, the liquid from the tank E willflow, through the tube D, into the air-tank B, and force air from said tank, through the tube 0, into the cask A, to take the place of the withdrawn beer, so as to keep the beer in .the said cask always under an air-pressure .to keep the carbonic-acid gas from separating from said beer and thus spoiling it.

When the beer' has all been drawn from the caskA the liquid-tank E is lowered below the air-tank B,

which allows the liquid in the air-tank B to flow back,

through the tube D,'into the tank E, air passing intothe tank B to take the place of'the water as it flowsout.

D into the tank E, the empty cask A may be detached from thetube O, and replaced with a full cask, so that, as soon as the water has all passed back into the tank E the said tank may be again raised, put- D, and movable liquid-tank E with each other, substantially as herein shown and described, to apply an airepressure to a cask of beer or other desired object,

as set forth.

JACOB VAN NORMAN.

Witnesses BEATY R. SWIFT, GEORGE- SHELLEY.

While the water is flowing back through the tube' The combination of the air-tank B 1), tubes (J and 

